String bubbles - 2 straws and 1 piece of yarn - string yarn through both straws, tie a knot, then rearrange into a square. Can do bubble 'windows' or use it to blow large bubbles. Get hand wet w/bubble solution and you can stick your hand through it.
DIY Kids Spray Bottle Art Experiment with abstract art using a spray bottle and paints. There are 2 methods for making kids’ spray bottle art: Spraying diluted paint Spraying water at watercolor paper- Make melting ice creams artworks
Calming bottles - these sensory bottles are great for little ones to explore and for preschoolers to use during a cooling off period. Water bottles with small amount of water poured out. Glitter glue, loose glitter, jewels and superglue to seal cap.